shell_tools: Export entrypoint variable once (SC2155)
shell_tools: Export entrypoint variable once (SC2155)

Change-Id: Ifeee476a95fe5e6d132583ebf721cf723f3385bd
Signed-off-by: Adrian DC <01fb3892f39957945220431e7409156544d2f041@gmail.com>

AdrianDC/android_development_shell_tools,AdrianDC/android_development_shell_tools